Pelvis Flashcards
what forms acetabulum
ilium, ischium, and pubis
what forms obturator foamen
ischium and pubis
what forms greater sciatic notch
ilium and ischium
what forms pelvic brim
- sacral promontory
- arcuate line of ilium
- pectineal line of pubis
- crest of pubis
what forms pubic arch
ischiopubic rami of both hip bones
what forms pelvic outlet (right/left, anterior/posterior boundaries)
right/left - ischial tuberosities
anterior/posterior - inferior pubic symphysis and coccyx
articulations for SI joint
sacrum and ilium
what type of joint is the auricular SI joint
anterior - synovial modified planar
what type of joint is tuberous SI joint
posterior - syndesmosis
what does anterior sacroiliac ligament do
stabilize SI joint; in transverse direction
what does posterior sacroiliac ligament do
restricts depression of sacrum and elevation of hip (wedging); oblique direction
what does sacrotuberous ligament do
limits upward rotation of inferior sacrum
what does sacrospinous ligament do
limit posterior tilt of coccyx
what does iliolumbar ligament do
limit anterior sliding of L5
what forms greater sciatic foramen
a) greater sciatic notch of ilium and ischium (superior, anterior)
b) sacrotuberous ligament (posterior)
c) sacrospinous ligament (inferior)
